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Finding the Fourth Proportional to 315,421.98, 435,276.73 and 179,453.00

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Solution

The fourth proportional to 315,421.98, 435,276.73 and 179,453.00 is: 247,641.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,421.98 : 435,276.73 = 179,453.00 : x
  2. Step 2: Convert to fraction form
    315,421.98/435,276.73 = 179,453.00/x
  3. Step 3: Cross multiply
    315,421.98x = 435,276.73 × 179,453.00
  4. Step 4: Simplify right side
    315,421.98x = 78,111,713,491.87
  5. Step 5: Solve for x
    x = 78,111,713,491.87/315,421.98
  6. Step 6: Final answer
    x = 247,641.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.